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SECURITIES - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Securities available-for-sale: |  |  |
Securities available-for-sale transferred to held-to-maturity | $ 175,260 |  |
Transfers Of Securities Held-to-maturity To Securities Available-for-sale | 0 |  |
Transfers To Or From Securities Held-to-maturity |  | 0 |
Securities held-to-maturity | $ 358,689 |  | $ 177,354
Number of holdings of securities of any one issuer in an amount greater than 10% of stockholders equity | 0 |  | 0
Threshold for disclosure percentage | 10.00% |  | 10.00%
Available for sale debt securities, unrealized loss position due to credit | $ 0 |  |
Accrued interest receivable on securities | 4,500 |  | $ 4,400
Unrealized loss on transfer of securities to held to maturity | 6,800 |  |
Gain (loss) on transfer of securities to held-to-maturity | 0 |  |
Carrying Amount |  |  |
Securities available-for-sale: |  |  |
Securities available-for-sale transferred to held-to-maturity | 182,100 |  |
Securities held-to-maturity | 383,922 |  | 179,309
Fair Value |  |  |
Securities available-for-sale: |  |  |
Securities available-for-sale transferred to held-to-maturity | 175,300 |  |
Securities held-to-maturity | 358,689 |  | 177,354
Available-for-sale Securities |  |  |
Securities available-for-sale: |  |  |
Securities pledged as collateral, carrying amount | 451,400 |  | 595,800
Held-to-maturity Securities |  |  |
Securities available-for-sale: |  |  |
Securities pledged as collateral, carrying amount | 352,400 |  | 132,000
Agency collateralized mortgage obligations ("CMOs") |  |  |
Securities available-for-sale: |  |  |
Securities held-to-maturity | 107,980 |  | 60,054
Agency Notes |  |  |
Securities available-for-sale: |  |  |
Securities held-to-maturity | 83,833 |  |
Pass-through mortgage-backed securities ("MBS") issued by government sponsored entities ("GSEs") |  |  |
Securities available-for-sale: |  |  |
Securities held-to-maturity | 166,876 |  | 117,300
Available for sale debt securities, unrealized loss position due to credit | $ 360,633 |  | $ 427,382

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